Mariestad Nilsson Energy


The aim of project, known as H2RES, is to produce renewable hydrogen fuel for heavy-duty road transport. A plant will be built around 5 HyProvide™ A90 electrolysers powered by two offshore wind turbines.

Key Facts

5 x A-Series A90



Production (kg H2/day)


Outlet pressure (bar)


Project location
Project with Ørsted

Demonstration of large-scale offshore RE-production

The purpose of the H2RES-project is to demonstrate how large-scale offshore RE-production can be utilized in the production of green hydrogen by electrolysis. Large-scale conversion of RE to hydrogen can ensure both an efficient energy utilization, sectoral integration and reduce the level of curtailment.

The application of green hydrogen for fuel cell based heavy-duty transport is a way of both utilizing the Danish RE-resources and ensuring decarbonization in the transport sector. H2RES also showcases Danish innovation and green technologies for inspiration and application in the rest of the world. Several of the project’s ‘state-of-the-art’ elements have never before been seen in this context and will show groundbreaking, scalable green solutions developed and delivered by Danish companies.

In the H2RES-project a 2 MW electrolysis installation, located at the Ørsted powerplant in Avedøre, will produce upwards of 1,000 kg. of green hydrogen per day for utilization in the transport sector in Greater Copenhagen and on Sealand.

Electrolysis equipment for every scale


HyProvide™ A-Series

Available in standardised, modular configurations for maximum efficiency, versatility and scalability, this next-generation technology makes the A-Series one of the most efficient alkaline electrolysers on the market. The unit is designed from the ground up to accommodate the input fluctuations that come with renewable energy sources. Its versatile design allows for application across many different market segments for green hydrogen production.

Above_4.5MW abd beyond_100MW

HyProvide™ X-series

The X-Series is based on the existing well-proven technology, optimised for use in the growing market for large-scale applications in, for example, industry, energy and heavy-duty transport sectors. Its unique multi-stack concept allows the electrolyser to reach higher voltages crucial to utilise mass-produced, low-cost and high-efficiency power electronics from wind and solar markets operating in the 1000-1500V range.

Are you interested in becoming our partner? We are here to help guide you through our technology and offering.

Søren Rydbirk

CCO, Green Hydrogen Systems